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《材料成型及控制工程专业英语配套教学课件刘瑛电子课件 Unit 7.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Unit7MaterialProperties材料属性Objective0102Understandthemeaningoftheimportantmechanicalproperties03Explainthematerialbehaviorswithstressstraincurve04BefamiliarwiththephysicalandmechanicalpropertiesofmaterialsDescribethepositionsoflinegraphusingproperprepositionsWarmingupDi
2、scussingroups.Canyoudescribethematerialpropertiesofthehouseandthering?Task1AnswerHard,strong,brittle,durable,glossyWarmingupWorkingroupsandlistasmanyitemsasyoucan;WatchVideo7-1toaddmore.Task2WarmingupAnswerWarmingupAnswerWarmingupReadthefollowingtextandfillinthetable.Ta
3、sk3WarmingupAnswerTextThetechnicaltermsareincolumnA,andthemeaningsofthemareincolumnB.Pleasematchthem.Task4Answer1.i2.h3.f4.a5.c6.e7.g8.b9.dTextWatchVideo7-2,filltheblanksandanswerthefollowingquestions.Task5Answer(1)Yieldpoint;(2)Thehorizontalaxisrepresentsstrainwhilethe
4、verticalaxisrepresentsstress.Stress;strain;proportional;Hook’slaw;elastic;yieldpoint;plastic;breakingpointDescribinggraphsII:PositionsoflinegraphLanguageStudyWhenwedescribewhathappensatwhichmomentorperiod,weneedfollowingprepositions:Moment:At;After;Upto;SoonafterPeriod:
5、From…to…;UntilForexample:Aftertheyieldpoint,thedeformationismainlyplastic.Fromthestartpointtotheyieldpoint,thedeformationiselastic.Putthestagesinthecorrectsequencetoformatextdescribingthegraph.Fillinthemissingreferences(O,P,E,Y,U,R)Task6LanguageStudyAnswer(1)(6)(3)(2)(5
6、)(4)(1)OP(2)U(3)Y(4)R(5)U(6)EAddfollowinginformationtothetextinTask6incorrectsequence.Task7LanguageStudyAnswerLanguageStudySituationPracticeWatchVideo7-3carefully,payattentiontothemethodofdecidingyieldpointandtheunloadingprocess.Studyyourownstressstraingraph,andmarkoutt
7、heimportantturningpointsonthecurve.Describethegraphforyourpartner.Task8AnswerLanguageStudy(1)Fromtheoriginpointtotheyieldpoint,thematerialdeformselastically,andfromtheyieldpointtothefracturepoint,thematerialdeformsplastically.(2)Omit(3)Thestrainthattheunloadlineintersec
8、twiththestrainaxisisthefinalstrain.ForstudentA,finalstrainis0.18;ForstudentB,finalstrainis0.33.AnswerLanguageS
